[Do you think if we were able to let loose and 'not care' as much, basically just live our day to day lives as best we can without thinking about concussions it would actually help our recovery more? ]

YES. For you, not caring as much will mean you still care about risks.

Your CBT therapist should be helping you put together a list of movements that are not concussive movements nor subconcussive movements.

If riding the train caused subconcussive impacts that lead to CTE, millions would have CTE. Those with CTE usually played sports and ignored their subconcussive helmet to helmet IMPACTS, not contacts or bumps or they routinely headed a soccer ball or they had head to head contact in rugby.

They did not get CTE from riding a train, walking on a hard surface or kissing aggressively or plopping their head down on a pillow or getting a haircut.

Get your hormones checked so you can rule that out or treat it if you are one of the rare cases that need hormone therapy.

Practice good sleeping posture so you do not stress your neck if that is a contributing factor.

YES, There have actually been studies that show that those who accept that they were injured and just move on with their lives recover much faster and better.